158813693 has 4 divisors (see below), whose sum is σ = 158846688. Its totient is φ = 158780700.

The previous prime is 158813591. The next prime is 158813701. The reversal of 158813693 is 396318851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158813693 - 2¹⁶ = 158748157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158813293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7721 + ... + 19422.

It is an arithmetic number, because the mean of its divisors is an integer number (39711672).

Almost surely, 2^158813693 is an apocalyptic number.

It is an amenable number.

158813693 is a deficient number, since it is larger than the sum of its proper divisors (32995).

158813693 is an equidigital number, since it uses as much as digits as its factorization.

158813693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32994.

The product of its digits is 155520, while the sum is 44.

The square root of 158813693 is about 12602.1304944839. The cubic root of 158813693 is about 541.5384716378.

The spelling of 158813693 in words is "one hundred fifty-eight million, eight hundred thirteen thousand, six hundred ninety-three".